[PATCH] Use of uninitialized variable in drivers/net/depca.c

hi,

this fixes coverity bug #888, where the variable
dev is used uninitialized. I assume the programmer
meant to use mdev, which is initialized.
Compile tested only.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>